Motorola CM160 Service Information - Page 16
Browse online or download pdf Service Information for Two-Way Radio Motorola CM160. Motorola CM160 26 pages. Commercial series controlhead
Also for Motorola CM160: User Manual (5 pages), User Manual (46 pages), Basic User's Manual (12 pages)
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3-4
2.0
Controlhead CM160/CM360 Troubleshooting Chart
2.1
Control Head Failure
Control Head Check
No
Back light
OK ?
YES
Power-up
No
Alert Tone
OK ?
YES
Indicator
No
LED'
S
OK ?
YES
No
Display
OK?
YES
Up/Down
P1 and P2
No
Alert Tone
Buttons
OK?
YES
EXT
No
PTT
OK ?
YES
No
Communication Ok
Control Head is OK
Check 9.3V on
Q12, U1 and associated
parts and U8
Check Speaker
Connection
Check
Q8-Q10, U8 and 9.3V
Check LCD
connections, U3 for 5V,
Osc. pins 1 & 2 activity
SCI thru via U4
Check keypad resistors
Check Q13, Q802
Check Q803, Q14 and
associated parts
TROUBLESHOOTING CHARTS